Adapter for form tie wedges



Dec. 28, 1943. F. P. cooPER ADAPTER FOR FORM TIE WEDGES Filed Nov. 21, 1941 2 Sheets-Sheet l INVENTOR FRAN/(R cooPik Dec. 28,- 1943. F. P. COOPER I ADAPTER FOR FORM TIE WEDGES 2 Sheets-Sheet 2 Filed Nov. 21, 1941 ,5 V I Jib-ll M 4 a E q W Z 5 A a 1 2 .w 'ZILM r M m rm 2 INVENTOR FRANK I? (001%? BY 22f ATTOEYS Patented Dec. 28, 1943 UNITED sTATes ADAPTER FOR. FORM TIE WEDGES Frank P. Cooper, Cranfford, N. J., assignor, by .mesne assignments, to Ralph E. Ogden, New

York, N. Y.

OFFICE 9 Claims.

This invention relates to the provision of a form tie wedge adapter for compensating for differences in the distance between forms for concrete which are held together by tie rod or for unlike lengths of the tie rods. It is common practice to build up spaced forms forreceiving poured concrete and to hold them together by driven wedges between outer members of the forms and abutments on the tie rods. An example of such an arrangement may be found in Patent No. 2,101,141, issued to Daniel C. Hungerford, December '7, 1937. In such arrangements differences in the dimensions of the material of which the forms are made, the spacing of the walls of the forms or of the distance between the abutments on tie rods cause variations to occur in the width of the spaces into which the wedges are driven. An object of this invention is to provide a device for compensating for such variations. Another object is to provide an adapter with a plurality of space-d receptacles for tie rod heads. This not only compensates for the aforesaid variations but enables the use of tie rods of different lengths and also enables the use of tie rods of equal lengths on forms of unequal spacing or on forms which are not parallel as when one or both of the form walls are battered.

These and other objects of the invention will appear in the following specification in which certain embodiments of the invention will be described and its novel features set forth in appended claims.

Fig. 1 of the drawings is a side elevation, part- .ly in section, of two of the outside members of a form, the end portion of a tie rod, a wedge of standard design and an adapter which embodies my invention interposed between the wedge and the enlarged head of the tie rod;

Fig. 2 is an end-elevation of the same elements with the parts of the tie omitted;

Fig. 3 is a side elevation of the end portion of a tie rod and an adapter, a part of the latter being shown in section. In this figure the parts are shown in different relative positions than those shown in Fig. 1;

Fig. 4 is a sectional end elevation of the parts shown in Fig. 3, the section being taken on the line 4-4 of the latter figure;

A modified form ofadapter is shown in Figs.

5, 6, '7 and 8 which otherwise correspond to Figs. 1, 2, 3 and 4;

Fig. 9 is an end elevation of a further modification.

IO and H designate walers which are spaced outer horizontal members of a form for holding concrete.

I2 is a tie rod which passes between the walers. I3 is an enlarged head near the end of the tie rod which forms a laterally projecting stop for engaging parts of the adapter which is described herein. On the end of the tie rod is a portion 24 somewhat larger than the diameter of the rod I'Z and smaller than that of the head I3 and having flattened sides. These parts are conventional and well known.

29 is a tubular adapter having an inner transverse dimension of sufficient width to form a clearance for the head I3 and having avertical dimension nearly double that of the head. Along the upper side of this device is a plurality of 1011',- gitudinally spaced abutments 2! which project downwardly from the top and inwardly from the sides thereof. These abutments are short enough to allow the head I3 to pass under them and the spaces 22 between them are of sufficient width to receive the head l3. The ends 23 of the adapter are oppositely beveled as shown. 24 designates longitudinally spaced transverse holes through the adapter.

33 is a wedge having a flat portion 3| adapted to rest against the Walers l0 and H andbeveled surfaces 32, 32 on either side of a central slot 33. The lower end of the slot is enlarged as at 34 to permit the wedge to be passed over the tie rod head It.

When the forms are assembled and a tie rod passed through them a wedge 30 is passed over the tie-rod and brought into abutting relation with the walers. Then an adapter is placed over the tie rod and moved along until one of its ends abuts the surfaces 32, 32 ofthe wedge. The inclination of the surfaces 32, 32 and of the ends 23' of the adapter is substantially alike. This movement is possible when the tierod head is in the lower part of the adapter as shown in Figs. 3 and i. When thus positioned the adapter is moved downwardly or the tie rod raised to bring the head l3 into one of the spaces 22. The dis tance between the spaces 22 are equal and preferably somewhat less than the take-up which can be produced by the wedge as shown in the draw-. ings. The result is that one end of will rest upon the wedge surfaces 32, 32 and the tie rod head will rest upon one of the abutments 2 l. A nail 25 (Figs. 1 and 2) may be passed through one of the transverse holes 24 to hold the tie rod head in the space 22. Now the wedge may be driven down to exert the desired amount the adapter of pressure between the walers III, II and the tie rod head l3.

It is obvious that the distance between the walers and the tie rod head may vary considerably and that the adapter may be used to form a rigid device interposed between them. It is also obvious that either end of the adapter may be brought into abutting relation to the wedge.

The lower part of the adapter 20A shown in Figs. 5-8 is semi-circular with an internal diameter somewhat larger than that of the tie rod head I3. Bail-like portions 2|A extend upwardly from this lower part of the adapter. These are transversely narrower than the head so that they form abutments for the head. These portions HA are separated by spaces 22A into which the head may be raised. The ends of this adapter are oppositely beveled, as at 23A.

The manner in which this form of adapter is used is so similar to that previously described that it is not necessary to repeat a description of the operation.

The adapter 28B shown in Fig. 9 is similar to that shown in Figs. 1-4, but its lower edge is open. This adapter may be put between the wedge and the tie rod head.

Other structura1 modifications than those shown and described may be made within the spirit and scope of this invention and no limitations are intended other than those imposed by the appended claims.

Having thus described the invention, what is claimed is:

l. The combination with a wedge and a tie rod. extending beyond the wedge and having a stop projecting laterally from a fixed position near the end thereof beyond the wedge, of an adapter having an end engaging the wedge and abut ients longitudinally spaced from said end selectively engaging said stop and forming a rigid compression member of adjustable lengths between the wedge and the tie rod stop.

2. The combination with a wedge and a tie rod extending beyond the wedge and having a stop projecting laterally from a fixed position near the end thereof beyond the wedge, of an adapter comprising a rigid tubular compression member having an end engaging the wedge and a portion of internal dimensions larger than the transverse dimension of said stop and longitudinally spaced transverse ledges projecting into said portion of the member selectively engaging the stop.

3. The combination with a. wedge and a tie rod extending beyond the wedge and having a stop projecting laterally from a fixed position near the end thereof beyond the wedge, of an adapter having an end engaging the wedge and abutments longitudinally spaced from said end selectively engaging said stop and forming a rigid compression member of adjustable lengths between the wedge and the tie rod stop, and means for retaining the tie rod stop in one of the spaces between the abutments.

The combination with a wedge having a bearing surface and another surface inclined thereto and a tie rod extending beyond the wedge and having a stop projecting laterally from a fixed point near the end thereof beyond the wedge, of an adapter having longitudinally spaced abutments selectively engaging said stop and an end engaging the wedge, said end of the adapter being inclined to correspond substantially with the inclined surface of the wedge and said abutments having surfaces substantially parallel with the bearing surface of the wedge.

5. The combination with a wedge having a bearing surface and another surface inclined thereto and a tie rod extending beyond the wedge and having a stop projecting laterally from a fixed point near the end thereof beyond the wedge, of an adapter having longitudinally spaced abutments selectively engaging said stop and an end engaging the Wedge, said end of the adapter being inclined to correspond substan tially with the inclined surface of the wedge and said abutments having surfaces substantially parallel with the bearing surface of the wedge, and means for retaining the tie rod stop in one of the spaces between the abutments.

6. The combination with a wedge and a tie rod extending beyond the wedge and having astop projecting laterally from a fixed position near the end thereof beyond the wedge, of an adapter comprising a rigid tubular compression member having an end engaging the wedge and a semi circular portion of greater inner diameter than the transverse dimension of said stop and 1ongitudinally spaced arcuate portions of smaller diameter than the transverse dimension of the stop projecting from said semi-circular portion to selectively engage the stop.

'7. The combination with a wedge and a tie rod extending beyond the wedge and having a stop projecting laterally from a fixed position near the end thereof beyond the wedge, of an adapter comprising a rigid tubular compression member having an end engaging the wedge and a semi-circular portion of greater inner diameter than the transverse dimension of said stop and longitudinally spaced arcuate portions of smaller diameter than the transverse dimension of the stop projecting from said semi-circular portion to selectively engage the stop, and means for retaining the tie rod stop in one of the spaces between said arcuate portions.

8. The combination with a wedge and a tie rod extending beyond the wedge and having a stop projecting laterally from a fixed position near the end thereof beyond the wedge, of an adapter having an end engaging the wedge and abutments longitudinally spaced from said end selectively engaging said stop and forming a rigid compression member of adjustable lengths between the wedge and the tie rod stop, the spaces between the abutments being less than the take up of the wedge.

9. The combination with a wedge and a tie rod extending beyond the wedge and having a laterally extending stop near the end thereof beyond the wedge, of an adapter arranged to be interposed between the wedge and the tie rod stop, said adapter being in the form of a body having a base and having a plurality of abutment surfaces differently spaced from the base for selectively engaging said stop to' form a compression member, and means for retaining the tie rod stop in desired positions in relation to the abutment surfaces.

FRANK P. COOPER. 

